bugfix - resolved issue with nanmean.m m-file, cosmetic changes to the others. See http://bugzilla.fcdonders.nl/show_bug.cgi?id=2445


git-svn-id: svn+ssh://svn.fcdonders.nl/home/svnroot/fieldtrip/trunk@9114 0cf7c7f0-3615-4144-b4e6-68da3bce3cd0
automatically synchronized identical files to revision 9114

git-svn-id: svn+ssh://svn.fcdonders.nl/home/svnroot/fieldtrip/trunk@9115 0cf7c7f0-3615-4144-b4e6-68da3bce3cd0